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Pipeline Safety: Petition for Waiver; Northern Natural Gas Company

Notice; petition for waiver.

Northern Natural Gas Company (NNG) petitioned the Office of Pipeline Safety (OPS) for a waiver from the requirements of 49 CFR 192.625(b)(3), Ordorization of gas. This section requires that a transmission line located in a Class 3 or Class 4 location that transports a combustible gas in a distribution line must contain a natural odorant or be odorized so that the gas is readily detectable by a person with a normal sense of smell unless, in the case of a lateral line which transports gas to a distribution center, at least 50 percent of the line is in a Class 1 or Class 2 location.

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